function toggleWest()
{
	var e =$('.theme-west');
	if(e.css("display")=="block")
	{
		e.hide();
		$(".theme-center").css("margin-left","0");
		$("html").css("background-position","-120px 0");
	}
	else
	{
		e.show();
		$(".theme-center").css("margin-left","120px");
		$("html").css("background-position","0 0");
	}
}